Daniel dbawbaugh



M, A mh/M N.PETEHS. PHOTO-LITHOGRAPHER, WASHINGTON, D C.

"4 machinery for making cut nails, wherein itis required to'r'everse thenail-plate after every cut, for the purpose he ally, so as `tochange-the obliqpity of cutl across the nail-plate,lby loosening thelpivot-bolty whichsecures it to /f l' @uiten `faire @anni @Hita DANIELD'RAWBAUGH, or EBERLYS MILL, PENNSYLVANIA; Lata-A Patent No. 71,148,dared November 19, 1867.

IMPROVBD NAIL-PLATE FEDING DBVIGB.

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Be it known that I, DANIEL DRAWBAUGII, of .Eberlys Mill, Cumberlandcounty, State of Pennsylvania, have invented anew and improvedNail-Plate Feeder; and I do hereby declare that the followingis a. full,clear, and exactdescription thereof, reference boing had to theaccompanying drawings, makng a part of this specification, in whichfFigure 1 is aside elevation of the improved mechanism for feeding andturning nail-plates. Figure 2 is a similar view of the same parts whenthrown out-of operation. Figure 3 is a top view o f iig. 1. l FigureLitis a sectional view in detail of the upper end of the post whichsupports the outer end of the nail-rod, showing the manner of pivotingthe tubular support.

Figure 5 shows the spring-fingers on the upper end of the arm whichrotates the nail-rod. Similar letters of reference indicatecorrespondingparts in the several figures. This invention relates tocertain 4novel improvements on machinery for feeding nail-plates `to thecutters of of making tapering nails.

Previous to my invention, the work of feeding .the nail-plates fromwhich the nails1 are out up,to the cutting-jaws was effectedautomatically by a weight acting upon the nail-rod, so as to move thisrod in a direc tion with its length, and, in conjunction with thisendwise movement of therod, it was oscillated aboutv its longitudinalaxis by devices which received their motion from themain driving-shaftof the nail-cutting machine.

The nature of my invention consists in giving toa nail-rod, which isfree to vibrate and also to move in a direction with its length, anintermittent rotary motion; and also in `providing for stopping themotion of the feeding devices automatically when a nailfplate hasbecometoo short to continue cutting, as will be hereinafter described. Itfurther consists i'n a novel mode of adjusting the nail-rod supports,and setting them so as to vary the obliquity of the cut, according tothe degree of taper required of the nails, as will be hereinafterdescribed.

.To enable others skilled in the art to understand my invention, I willdescribe its construction and operation.

In figs. 1, 2, and 3, of the accompanying drawings, I have representedmy invention applied to a portion A of a well-known nail-cuttingmachine. A represents the frame of such machine, B the stationarycutter-bed, t with its cutter, a, arrangednpon an inclined lplane,' Cthe vibrating cutter, with its spring-stop, a', against which the end ofthe nail-plate is fed before the operation of cutting. .D is apitman-rod, which is connected at oneend to the lower end of a vibratinglever, (not showm) that receives its motions from a cam on the maindriving-shaft, and at the opposite: end this rod is connected toa'vibrating larm, E, whichy rotates the nail-rodiF.

A bracket, A', which is secured to the bottom of the frame A, extendsoutward and upward, and forms the inner support for the devices whichguide the inner end of the nail-rod F. This bracket can be adjustedlaterthe bttomfof the, fran:ie- A,y and swinging it around on saidpivot. The. outer part of the nail-rod F is supported upon the uppersection of a vertical post, G, which is secured to alaterallyladjustable base-plate, Gr. The upper end of thevertically-adjustable section b of. post Gr is adapted for receiving aspherical enlargement, c, which is formed on a tubular bearing, c, andallowing this bearing to have a free rotary motion about its axis, andalso a free vibrating motion. This ball-and-socket, connection is shownclearly in g. 4. .The tubular 1 bearing c is constructed with twospiraliianges, c c', on it, which are acted upon by the spring-{ingers d d, onthe forked end of arm E, so thatcat every backward movement of this armE the bearing c Will receive a halfrotation. When arm E is movedforward, or toward the nail-machine, the ngers d d do not turn thetubular bearing. The opening which is through the axis of the tube c isadapted for receiving the square portion of the nailrod F, and allowingthis rod to receive a free endwise movement, as well as an intermittenthalf-rotary movement. The pitman-rod D, which communicates a vibratingmotion to the upper end of arm E, has a notch ont in its lower edge,near its outer end, which notch catches over the edge of a plate, e, onarm E, through a vertical slot of which-the pitman-rodpasses. Theextreme outer end'of the pitman-rod is connected by a rod, L e', to theshort arm of a lever, H, which islpivotcd to post G, near its upper end,as shown in gs. 1 and 2.

When the longest arm of the lever H is supported upon the restf,` onbracket A', the outer end of the pitman-rod will be depressed, so as toallow its notch to engage with the lever or arm E; but when the lever Hdrops from the restf, as shown in iig. 2, the Pitman-rod will bedisconnected from its arm E, and this arm will cease to vibrate. Theobject of this arrangement is to have the intermittent rotary motion ofthe nail-rod F cease when the nail-platc becomes too short, for whichpurpose the cam or toe-piece g, on the neil-rod, is so I arranged withreference to the length of the nail-plates, that when the latter becometoo' sho`rt in the nippeis a' vibrating movement to the weighted leverc.

F', this piece g will strike the spring g', and push lever H from itsrest f, when rthc weightW will cause this lever to drop, as shown infig. 2. By having thev toe-piece g adjustable longitudinally upon thenailrod,it may be adjusted for nail-plates of different lengths. Thatedge of the nail-plate P which is nearest the cutters is held down inplacer upon the surface of the 'stationary cutter a by -means of alightspring, S, which acts upon a hookcdrplate, S'. This plate S ispivoted to the inner face of the vertical portion ofthe bracket A' bymeans `whiclrwill allow it to rise and fall vertically, and at the sametime to vibrate. The hook en one part of this plate is intended forreceiving-under it the round part of the nail-rod F, and thus allowingspring S to hold this rod down in place with an elastic pressure whenlever H is upon its restf and pitman-rod D is connected to its arm E, asshown in iig. 1. On the opposite edge of plate S' to the hook areprojections, one of which is acted upon, when lever H drops from itsrest f, by this lever, so as to throw upthe hook which keeps down the4nailrod. The other projection allows lever H to move thehook over thenail-rod when this lever is lifted upon its rest. The hook on plate S'servcsas a guide for-the nail-rod, as well as a means for allowing thespring S to act upon it. To the rear end or shortest arm of lever H adong spring-brake, I, is secured, the upper end'oi` which is forciblypressed by the weight W against the periphery of a friction-wheel, J,when the lever H drops i from the restf. 'lhe wheel J is fast on atransverse shaft, z', which 4ha'sitsbearings upon the upper end of theadjustable section b of post Gr, as shown in figs. 3 and 4. Between thecrotche'd, end of section b, and fast upon the shaft z', is a""groovedpulley, over` which passes a, cord,j, that is connected to a loadedlever, 7c, on the re'ar end of the nail-rod. The other end olf thecordjhang'ls downand has a weight.l Y, attached to it. The weight Yshould he sufficiently heavy to feed the nail-ron toward the cutters,and to keep the'nail-plate u-p to the work, when lever H is upon'itsrestf. When this lever H drops from its rest, and thus brings the armI-in contact with the friction-wheel J, the friction or resistance will"be greater than can be overcome by the weight Y, and hence this weightwill not move the nail-rod forward. The nail-rod may be moved backwardor forward by hand at any time for-the purpose of adjusting a nail-platebetween the nippers P', or removing the pieo'es left after the operationofrcutting. The cordjis attached to the shortest arm of the lever le,and the4 weight to its longest arm. This lever lc is attached looselytothe rear end' of the nail-rod, so as to allow this rod to rotatefreely, and by its vibration the nail-rod is held up to the work by aslightly-yielding pressure during its entire forward movement. By havingthe cord J attached to the weighted lever, which is hung on the feed-rodF, there'isalsc a lslight start given to the feed-rod, as soon as anail-piece is cut off from the' plate; this start forward being producedby reason of the back movement of the feed-rod when the nail-pieceis.severed from the plate, giving The movement of the feed-rod is alsokept` in a sort of balance between the feed-weight proper and theauxiliary weight on lever lc, and thus a great deal of the bindingraction between the rod E and its bearing or guide is obviated. Theauxiliary weight of lever k also acts as a sort of check upon.thclfecd-weigbt proper, and thus relieves the parts of the machine fromsudden jars when a new feed of the nail-plate takes place.

The tube c is reduced inv diameter, where it'passes through the ball,and receives o n its end a nut or sleevescrew. This will allow the tubee, with its ilanges c', to rotate freely without turning its ball.

-Iu order to readily apply the feeding devices to any of the well-knownnail machines, a divided eccentric, shown in iig. 6, is used, which issecured to the main drivingshaft bythe clamp-screw p, thus avoiding thenecessity of changing the construction of such driving-shaft, orremoving it from its bearings when' it is desired to apply the eccentricto it.

The rear end of the pitman-rod D is connected to a vibrating arm, whichis acted upon bythe eccentric above mentioned, by means of a dividedbearingfbox, shown in tig. 7. The rod D passes through this box andreceives upon it two clamping nuts v a, by means of' which the two partsofthe box can be set up snugly to the wrist-pin v', which pivots the boxto its vibrating arm, and thus the wearing of the pin und box can becompensated for, and lost-motion" prevented. The nuts v v are also usedfor adjusting the box, so that the rod D willgive the proper movementsto arm E. I

Having described my invention, what Iclaim as new, and desire to secureby Letters Patent, is

1. The combination of the spring-lingers on the vibrating yoke-arm E,and the spiral anges upon the tubulaibearing c, through which thenail-plate feeding-rod passes, for the purpose and in the mannersubstan- 'tially'as described.

2. The combination of the tubular bearing c, nail-feeder F, anduniversal joint e5, arranged substantially as and for the purposedescribed.

3. The combination of the loaded lever 7c, arranged upon theouter end ofthe nail-feeding rod F, with the cord, weight, and pulley, for feedingthe nail-,rod with the nail-plate up to the cutters, substantially asand for the purposes described.

4. 'lhe hooked plate S' and spring S applied to the bracket A',substantially as described.

5. Providing for automatically stopping therotary motion of the naibrod,and at the same time releasing `this od from the hooked plate S', bymeans substantially as described.

6. The combination of brake-rod I, onlevcr H, with a friction-wheel onthe shaft i of the pulley J, substantially as described. t

7. The adjustable post G b, in combination withthe laterally-adjustablebracketI A', substantially as described.

DANL DRAWBAU GH.

Witnesses.

J. B. DRAWBAUGH, LAFAYETTE CRULL.

